GB1278861A - Transmit-receive devices - Google Patents

Transmit-receive devices

Info

Publication number
GB1278861A
GB1278861A GB5208/70A GB520870A GB1278861A GB 1278861 A GB1278861 A GB 1278861A GB 5208/70 A GB5208/70 A GB 5208/70A GB 520870 A GB520870 A GB 520870A GB 1278861 A GB1278861 A GB 1278861A
Authority
GB
United Kingdom
Prior art keywords
circuit
counter
gate
signals
stable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5208/70A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Litton Industries Inc
Original Assignee
Litton Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Litton Industries Inc filed Critical Litton Industries Inc
Publication of GB1278861A publication Critical patent/GB1278861A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Facsimile Transmission Control (AREA)
GB5208/70A 1969-02-04 1970-02-03 Transmit-receive devices Expired GB1278861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79646469A 1969-02-04 1969-02-04

Publications (1)

Publication Number Publication Date
GB1278861A true GB1278861A (en) 1972-06-21

Family

ID=25168247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5208/70A Expired GB1278861A (en) 1969-02-04 1970-02-03 Transmit-receive devices

Country Status (6)

Country Link
US (1) US3627928A (enrdf_load_stackoverflow)
JP (1) JPS5124841B1 (enrdf_load_stackoverflow)
CA (1) CA932665A (enrdf_load_stackoverflow)
DE (1) DE2004296C3 (enrdf_load_stackoverflow)
FR (1) FR2032740A5 (enrdf_load_stackoverflow)
GB (1) GB1278861A (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH530742A (de) * 1970-08-24 1972-11-15 Ciba Geigy Ag Vorrichtung zur Erzeugung von Schlüsselimpulsfolgen
DE2507804C1 (de) * 1975-02-24 1979-11-29 Siemens Ag Schaltungsanordnung zur Steuerung von Halbduplex-Datenuebertragungsanlagen
US4185166A (en) * 1975-04-14 1980-01-22 Datotek, Inc. Multi-mode digital enciphering system
JPS5526910U (enrdf_load_stackoverflow) * 1978-07-28 1980-02-21
DE2929252C2 (de) * 1979-07-19 1984-09-20 Siemens AG, 1000 Berlin und 8000 München Verfahren zur verschlüsselten Datenübertragung im Halbduplexbetrieb zwischen Datenendeinrichtungen zweier Datenstationen
EP0382680B1 (de) * 1989-02-08 1994-10-12 Gretag Data Systems AG Verfahren zum kryptographischen Behandeln von Daten und kryptographisches System
US7543142B2 (en) 2003-12-19 2009-06-02 Intel Corporation Method and apparatus for performing an authentication after cipher operation in a network processor
US20050149744A1 (en) * 2003-12-29 2005-07-07 Intel Corporation Network processor having cryptographic processing including an authentication buffer
US7512945B2 (en) 2003-12-29 2009-03-31 Intel Corporation Method and apparatus for scheduling the processing of commands for execution by cryptographic algorithm cores in a programmable network processor
US7529924B2 (en) * 2003-12-30 2009-05-05 Intel Corporation Method and apparatus for aligning ciphered data
US7923341B2 (en) * 2007-08-13 2011-04-12 United Solar Ovonic Llc Higher selectivity, method for passivating short circuit current paths in semiconductor devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL109840C (enrdf_load_stackoverflow) * 1957-02-26

Also Published As

Publication number Publication date
DE2004296A1 (enrdf_load_stackoverflow) 1970-08-20
JPS5124841B1 (enrdf_load_stackoverflow) 1976-07-27
CA932665A (en) 1973-08-28
US3627928A (en) 1971-12-14
DE2004296B2 (de) 1975-10-16
FR2032740A5 (enrdf_load_stackoverflow) 1970-11-27
DE2004296C3 (de) 1979-06-21

Similar Documents

Publication Publication Date Title
GB1363234A (en) Receivers for communications systems
GB1278861A (en) Transmit-receive devices
US4187392A (en) Synchronous universal binary scrambler
US4805216A (en) Method and apparatus for continuously acknowledged link encrypting
GB1038709A (en) Improvements in and relating to communication systems
GB1140102A (en) Code communication system
US3814860A (en) Scanning technique for multiplexer apparatus
GB1072490A (en) Data transmission controller
FR1442912A (fr) Dispositif de codage d'une information ayant la forme d'impulsions
US3585596A (en) Digital signalling system
US2677725A (en) Telegraph receiver utilizing electronic distributors
GB1321695A (en) Data communication system for servicing two different types of remote terminal units over a single transmission line
US4864617A (en) System and method for reducing deadlock conditions caused by repeated transmission of data sequences equivalent to those used for inter-device signalling
GB996433A (en) Data transmission systems
US3571512A (en) Interrupt circuit for use in a duplex control circuit
US3576570A (en) Synchronous timing scheme for a data processing system
US3976972A (en) Prevention of non-allowed character combinations
US3516073A (en) Data and control character discrimination scheme for digital computer system
US3633168A (en) Line control adapter for a synchronous digital-formatted message-communications system
US3410957A (en) Electronic system for sending, receiving, and regenerating teleprinter signals
US1557633A (en) Translating device
US2417847A (en) Telegraph system
US3740477A (en) Simple speech scrambler
US4168395A (en) Start/stop teleprinter scrambler
NL6703102A (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee